Moulded rubber cable grommets at Margo Rubber Products, Nashik

ISO 9001:2015 Certified · Nashik, India

Custom Rubber Grommets,
Manufactured in India

Margo Rubber Products moulds cable and panel pass-through grommets at its ISO 9001:2015 certified plant in Nashik, India — open, blind, multi-hole, oval and bulkhead configurations from 6 mm panel hole upward, cut to print above that. Any of our eight compounds, at any size in the range.

Send a Grommet Drawing
Open · Blind · Multi-hole
Configurations
8 compounds
Any size, any compound
6–50 mm
Panel hole, cut to print above
Cut to print
From your panel drawing

02 · SPECIFICATION REFERENCE

Grommet Sizes and Configurations

A grommet is specified by three dimensions: the panel hole it sits in, the thickness of that panel, and the cable or bore it has to pass. Send those with the drawing and we will quote it. Compound is a separate choice — any of our eight is available at any size in the range.

6–12 mm1.0–1.6 mmOpen, blindAny of the eight
12–25 mm1.2–2.0 mmOpen, blind, multi-holeAny of the eight
25–50 mm1.6–3.0 mmOpen, blind, multi-hole, ovalAny of the eight
Above 50 mmPer drawingCut to printAny of the eight
Oval / slotted1.0–3.0 mmFlat cable and loomAny of the eight
Bulkhead / firewallPer drawingSealed pass-throughAny of the eight

Showing 6 of 6 entries. Groove width is the thickness of your panel — measure the sheet, not the hole. The bore is set by the cable or pipe passing through, and is quoted from your drawing rather than fixed by the panel hole. Dimensional conformity to ISO 3302-1, class M1 to M4, as recorded on the drawing. Values are typical for the size band and are not a specification for a particular part; see our technical disclaimer.

03 · MATERIAL SELECTION

Which Grommet Material Do I Need?

A grommet is chosen for what it sits in and what it touches: the panel environment, the temperature at the aperture, and whether there is oil, fuel or weather on either side. Name those and we will tell you which to specify — and every compound below is available at every size we make.

EPDM
Temp. Range
−40° to +140°C
Hardness
40–90 Shore A

Ethylene propylene diene rubber, and the default for a grommet that sees weather, water, steam or coolant. Excellent ozone and UV resistance, so it holds an outdoor or engine-bay aperture for years without hardening at the lip. Not for petroleum oils.

NBR
Temp. Range
−30° to +120°C
Hardness
40–90 Shore A

Nitrile butadiene rubber, the general-purpose industry standard. Outstanding resistance to petroleum oils and hydraulic fluids at moderate temperature — the choice for a grommet on the oil side of a housing or gearbox.

CR
Temp. Range
−40° to +120°C
Hardness
40–90 Shore A

Polychloroprene. The compound most grommet enquiries settle on, because it takes weather, ozone and moderate oil at the same time — the condition an exposed panel aperture actually lives in. Also the family we reach for when flame retardancy is specified.

VMQ
Temp. Range
−60° to +220°C
Hardness
30–80 Shore A

Vinyl methyl silicone, the widest service range of the eight. Specified for grommets at hot apertures and in lighting, oven and appliance panels. Biocompatible and food-contact grades on request. Poor abrasion resistance — not for a cable that moves against the bore.

AEM
Temp. Range
−40° to +175°C continuous to 160°C
Hardness
50–80 Shore A

Ethylene acrylic elastomer. Our signature compound, supplied to Mahindra & Mahindra for engine and transmission applications. Specified for a bulkhead or engine-bay grommet where oil, heat and ozone act together and neither EPDM nor nitrile will hold.

FKM
Temp. Range
−20° to +250°C continuous to 200°C
Hardness
60–90 Shore A

Fluorocarbon rubber, the first choice for aggressive chemical environments. Resists petroleum oils, fuels and many solvents at sustained high temperature. On a grommet it is a specialist answer — specify it when the aperture is in a chemical or fuel environment, not as a default.

SBR
Temp. Range
−30° to +100°C
Hardness
40–90 Shore A

Styrene butadiene rubber. Abrasion resistance at low cost, for grommets in water and mild service where the part protects a cable edge rather than seals an environment. Not for oil or fuel contact.

NR
Temp. Range
−20° to +90°C
Hardness
30–80 Shore A

Polyisoprene. The highest resilience of the eight, so it grips a panel groove hard and keeps gripping — useful on a grommet that has to stay put through vibration. Not for oil, fuel or sustained heat.

04 · IN THIS CATEGORY

Grommets We Make to Order

Each part below is manufactured to customer drawing or to our standard tooling. Panel hole, panel thickness, bore and compound are set from your specification, and full dimensional data is issued with the quotation.

  1. 01

    3 Pin Hole Pad

    Grommets · Made to order

  2. 02

    Internal Fit Grommets

    Grommets · Made to order

  3. 03

    Open Cable Grommets

    Grommets · Made to order

  4. 04

    Blind Grommets

    Grommets · Made to order

  5. 05

    Multi-Hole Grommets

    Grommets · Made to order

  6. 06

    Oval & Slotted Grommets

    Grommets · Made to order

  7. 07

    Bulkhead Grommets

    Grommets · Made to order

  8. 08

    Firewall Pass-Through Grommets

    Grommets · Made to order

  9. 09

    Wiring Harness Grommets

    Grommets · Made to order

  10. 10

    Panel Hole Plugs

    Grommets · Made to order

  11. 11

    Blanking Grommets

    Grommets · Made to order

  12. 12

    Cable Entry Seals

    Grommets · Made to order

  13. 13

    Junction Box Grommets

    Grommets · Made to order

  14. 14

    Switchgear Panel Grommets

    Grommets · Made to order

  15. 15

    Pipe Pass-Through Grommets

    Grommets · Made to order

  16. 16

    Edge Protection Grommet Strip

    Grommets · Made to order

  17. 17

    Metal-Reinforced Grommets

    Grommets · Made to order

  18. 18

    Cut-to-Print Grommets

    Grommets · Made to order

05 · COMMERCIAL TERMS

Lead Times and How We Quote

Margo produces in bulk against OEM schedules. Send the panel hole, the panel thickness, the bore and the compound with your volume, and we will quote it. Minimum run is 10,000 pieces per part number, per compound, or quoted against the part where size or complexity sets the economics. Prototype and first-article lots sit outside the minimum and are quoted separately.

Quotation

With feasibility report

48 hrs

Prototype

From an approved drawing

48–72 hrs

Existing tooling

Ex-works Nashik · 2 weeks express

3–4 weeks

New tooling

Tooling lead time quoted per part

3–4 weeks + tooling

Packaging

Bulk or counted bag on request

Poly bag + card label

06 · ENQUIRIES

Request Grommet Specifications

Send your panel drawing with the hole diameter, the panel thickness and the cable or pipe passing through — or the grommet you are replacing, with a note of what failed. Our engineering team responds within 48 hours with dimensional confirmation, a recommended compound and a quotation.